Terry J. Reedy added the comment:
(Import errors are runtime errors, not compile errors.)
After 'import lib2to3.pgen2', 'pgen2' in the code would not be valid. A 'from'
import is needed instead. I fixed the import for 3.5/6 (but not 2.7), but the
file still does not run.
File "F:\Python\dev\35\lib\lib2to3\tests\pytree_idempotency.py", line 27, in
main
gr = driver.load_grammar("Grammar.txt")
,,,
FileNotFoundError: [Errno 2] No such file or directory: 'Grammar.txt'
After fixing this with
def main():
- gr = driver.load_grammar("Grammar.txt")
+ gfile = os.path.dirname(os.path.dirname(__file__)) + "/Grammar.txt"
+ gr = driver.load_grammar(gfile)
dr = driver.Driver(gr, convert=pytree.convert)
the file fails with
FileNotFoundError: [Errno 2] No such file or directory: 'example.py'
There is no 'example.py in lib2to3. The closest is
lib2to3/tests/data/fixers/parrot_example.py. At this point, I leave it
Benjamin to fix the file so it runs or delete it.
The file is not used anywhere since it is not part of the regular test suite
(that would require the name to begin with 'test_'). It was meant to be run as
a test by itself -- see the doc string. Perhaps the completion of 2to3 and the
test suite made it obsolete.
----------
nosy: +terry.reedy
stage: -> needs patch
title: lib2to3/tests/pytree_idempotency.py has a broken import ->
lib2to3/tests/pytree_idempotency.py does not run
type: compile error -> behavior
versions: +Python 2.7, Python 3.6
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue26911>
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